Prediction Method Of Hydraulic Support Life Based On State Inspection

Hydraulic support is the key part of fully mechanized coal mining equipment. Its role is to support the roof and control of working face in Reliable and effective, insulate Mined-out area, Keep the underground space in safe, and goes on working face and related equipment mechanization. At present, the hydraulic support that many large-scale coal enterprises put into use has exceeded the use of cycle number that Provide by the manufacturer of hydraulic support or will reach it. Because the costs and repair costs of the hydraulic support are high, it cost too much to unrealistic for these devices if the enterprise Updated it. It is not to protect the coal mine safety production if we continue to use it. In view of the existing situation, it is very important to make evaluation technology of the hydraulic support in scientific and reasonable and assess the remaining life In order to achieve the better value of the support.At present, studies the whole life prediction for large equipment is still in the exploration. It is no study about the forecast of the whole life of hydraulic support so far. In order to find out a feasible life prediction method on the whole life of hydraulic support prediction based on relevant information in this article. This paper analyzed the influence factors of life cycle of the hydraulic support, described the life of hydraulic support respectively from the four aspects of safety, reliability, technology and economy, it is the most important to estimate its safety life from analysis on the life prediction of the hydraulic support. At the same time, it is state detection and Analysis on the structure of hydraulic support and its overall according to testing specification, it put forward for the failure criterion of structural components of hydraulic support with reference to test standards and norms of the hydraulic support in domestic and foreign and the application of fracture mechanics theory. According to the analysis of deterioration of the structures of powered support, it put forward for the concept of deterioration index. It can be row intervals about deterioration index based on the maximum membership degree principle of the fuzzy mathematics theory, each interval corresponds to deterioration of the technical state of hydraulic support. We can calculate the degradation index of the support according to state detection data of support and history data of previous situation, at the same time, we can evaluate the state of hydraulic support according to the numerical deterioration index, calculate the remaining life of the hydraulic support according to the formula to estimate the residual life of deterioration index based on fuzzy theory are given. Finally, we can estimate the residual life of60#hydraulic support of Shengdong mining area using the DBT2*4319type, according to the calculation formula based on deterioration index that be calculated according to the existing data refer to the hydraulic support’s history on the inspection standard and detect the situation. Through further analysis, the estimation method is feasible for the prediction of residual life of hydraulic support at this stage.